docs: def pretty_str(self, indent=0):
          """Return a human-readable string representation of this object.
  
          Kwargs:
              indent (int): The amount of spaces to use as indentation.
          """
          spaces = ' ' * indent
          condition = pretty_str(self.condition)
          v = self.declarations.pretty_str() if self.declarations else ''
          i = self.increment.pretty_str(indent=1) if self.increment else ''
          pretty = '{}for ({}; {}; {}):\n'.format(spaces, v, condition, i)
          pretty += self.body.pretty_str(indent=indent + 2)
          return pretty